Saw-set.



PATENTED JAN. 31, 1905.

"J. z. HERZING,

I SAW SET. APPLICATION FILED MAY 17, 1904 V UNITED STATES PatentedJanuary 31, 1905.

- JoHN Z. H RZING, 0F sr, MARYS, PENNSYLVANIA.

SAW-SET.

SPECIFICATION forming part of Letters Patent No. 781,205, dated January31, 1905. l Application filed May 17-, 1904. Serial No. 208,455.

To all whom it may concern:

Be it known that'I, JOHN Z. HERZING, a citizen of the United States,residing at St. Marys, in the county of Elk and State of Pennsylvania,have invented a new and useful Saw-Set, of which the following is aspecification.

This invention relates to saw-sets, and has for its object to simplifyand improve the construction and produce an implement of this characterof increased efliciency, durability,

and elfectiveness, while at the same time re will appear as the natureof the inventionisbetter understood, the same consists in certain novelfeatures of construction, as hereinafter fully described and claimed.

In the accompanying drawings, forming a part of this specification, andin which corresponding parts are denoted by like designatingcharacters,is illustrated the prefer red form of the embodiment of the,invention capable of carrying the same into practical operation, itbeing understood that the invention is not necessarily limited thereto,as various changes in the shape, proportions, and general assemblage ofthe parts may be resorted to with outdeparting from the spirit of theinvention or sacrificing any of its advantages, and the right istherefore reserved of making all the changes and modifications whichfairly fall within the scope of the invention and the claims madetherefor.

I In the drawings thus employed, Figure l is a side elevation, partly insection, illustrating a saw-set constructed in accordance with theinvention. Fig.2 is a bottom plan view of the same. Fig. 3 is atransverse section of the saw-set on the line 3 3 of Fig. 1. Fig. 4 is aperspective view of the movable settingjaw detached. Fig. 5 is anenlarged sectional detailof the setting-jaw-return spring-adjustingdevice. v

The improved implement comprises a stock of relatively large size toprovide the requisite weight to resist the blows imparted to the settingmember and provided at one end'with an anvil 11 of hardened steel. The

' stock is also provided with spaced guideways or channels 12 13,disposed at an angle to the plane of the'face of the anvil andterminating in a cavity 14 in the under side of the stock.

Extending from the stock 10 are lateral portions 15 16, having adjusting-screws 17 18, operating therethrough for bearing against a thesaw (represented at 19) to regulate the angle of the fs'et imparted tothe teeth, as hereinafter explained.

The setting-jaw 20 is provided at one end with an anvil 21, having anangular face and a-peen or blow receiving portion 22 at the other endand having integral spaced guide members 23 24 for engaging the inclinedguid eways 12 13 in the stock. By this arrangement it will be noted thatthe movable anvil 21 is disposed and operates at an angle to' thestationary anvil 11 and imparts to the sawtooth a blow at an angle tothe same, thereby producing the required degree of set.

The angular form of the face of the movable member 21 is an importantfeature in the operation, as by this means the impact upon the saw-toothis imparted at a sufficient distance from its point to' insure therequisite set and prevent the tooth from simply pounding flat, as willbe obvious. The anvil is further provided with a centrally-disposednotch 22 to receive the central portion of the tooth in order to preventflattening of the same. Near their inner ends the guide members 23 24are provided with transverse recesses 25 26, in which a strip 27 issupported by its ends, the strip having a transverse aperture to receivea bolt 28, the threaded end of the bolt engaging a threaded aperture ina cross-bar 29, inserted into the stock 10.

A spring is disposed upon the bolt 28 between the plate 29 and the head31 of the bolt andexerting its force to maintain the setting-jawyieldably in its projected position.

A lock-nut 32is arranged upon the bolt 28 and bears upon the inner sideof the plate 29 have imparted thereto an inclination of anydesireddegree and without danger of injury to the saw. All the teeth may thusbe inclined to exactly the same extent, and a reg- 5 ular and uniformaction be thereby obtained.

Having thus described the invention, what I claim is- 1. In a saw-set, astock having a stationary anvil member and provided with obliquely- IQdisposed guideways, a setting-jaw having its stationary anvil andprovided with obliquely- I disposed guideways, a pair of bars arranged1n said guldeways, a perforated strip connecting the bars, a screwextendlng through the 20 strip, a. spring disposed between the head ofthe screw and the strip, a setting-jaw carried by the bars and arrangedfor cooperation with the anvil, and means for supporting the saw at anangle to the anvil and setting-jaw.

3. The combination with a stock having a pair of obliquely-disposedguideways, of an anvil carried by the stock, a settingjaw, a pair ofbars arranged in the guideways and carrying said setting-jaw, across-strip conmeeting the bars and provided with an openingintermediate of its length, an adjustingscrew extending through saidopening,a crossbar adapted to receive said set-screw, a locknut for thescrew, and a spring arranged between the head of the screw and the stripand serving to restore the setting-jaw to initial position after eachoperation.

In testimony that I claim the foregoing as my own I have hereto afiixedmy signature in the presence of two witnesses.

JOHN Z. HERZING.

Witnesses:

FRANCIS A. HAUHR, BEATRIX M. LOWN.

